Simple DNS Forwarder

Important

Work In Progress ...

Todo

• concurrent connections
• mapping response to client
• caching
• support for falling back to different dns server

Demo

DNS forwarding server

The client requests the DNS forwarding server (running at localhost:8989) to resolve the address of the domain name "www.google.com"

Quick start

• Build the project using make
• Run the DNS forwarding server using ./server
• Test the server using a dummy client via make client

References

• Coding Challenges - Build Your Own DNS Forwarder
• RFC 1035 Section 4.1.1 - DNS query format
• Hash functions - sdbm